CN109428823A - The system and method for the NAT resource-adaptive distribution conversion of more Data Plane is realized based on NFV - Google Patents
The system and method for the NAT resource-adaptive distribution conversion of more Data Plane is realized based on NFV Download PDFInfo
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- CN109428823A CN109428823A CN201710722586.6A CN201710722586A CN109428823A CN 109428823 A CN109428823 A CN 109428823A CN 201710722586 A CN201710722586 A CN 201710722586A CN 109428823 A CN109428823 A CN 109428823A
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- data plane
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- adaptive distribution
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/02—Topology update or discovery
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/10—Flow control; Congestion control
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L61/00—Network arrangements, protocols or services for addressing or naming
- H04L61/09—Mapping addresses
- H04L61/25—Mapping addresses of the same type
- H04L61/2503—Translation of Internet protocol [IP] addresses
- H04L61/2521—Translation architectures other than single NAT servers
- H04L61/2532—Clique of NAT servers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L61/00—Network arrangements, protocols or services for addressing or naming
- H04L61/09—Mapping addresses
- H04L61/25—Mapping addresses of the same type
- H04L61/2503—Translation of Internet protocol [IP] addresses
- H04L61/256—NAT traversal
Abstract
The present invention relates to a kind of systems of NAT resource-adaptive distribution that more Data Plane are realized based on NFV, including EMS management module, vBras virtual management module, SDN switch module and SDN controller module, the invention also includes a kind of methods of NAT resource-adaptive distribution conversion that more Data Plane are realized using the system.Using the system and method for the NAT resource-adaptive distribution conversion for realizing more Data Plane based on NFV of the invention, NAT resource can be uniformly distributed according to Data Plane number, the assigning process is only handled when Control Plane Plane Initialisation simultaneously, therefore when Data Plane handles flow, it will not be had an impact to NAT session flow table speed is established, the number of Data Plane can also dynamically be changed using the system, and guarantee that there is a situation where flow interrupts, the programming of this method is simple simultaneously, it can be effectively added in actual software engineering project, it ensure that the dynamic expansion of empty machine professional ability, with wider application range.
Description
Technical field
It is more based on NFV realization that the present invention relates to the communications field more particularly to network address translation fields, in particular to one kind
The system and method for the NAT resource-adaptive distribution conversion of Data Plane.
Background technique
Global communication industry had begun into new historical stage, i.e. software defined network stage, this stage at present
The change for being mainly technically characterized by the network architecture be embodied in network control that is, from vertical Closed Architecture steering horizontal open architecture
System with forward separate, many aspects, the representative art such as the decoupling of network element software and hardware and virtualization, the cloud of network and ITization have
SDN, NFV and cloud computing.The arriving in this stage provides powerful weapon for the in-depth transition of telecommunication network, not only brings
Historic opportunity to develop, and bring unprecedented severe challenge.
Under more Data Plane scenes, there is a preposition SDN switch to be responsible for flow load sharing to each Data
Plane.According to NAT realization principle, when flow is from user side (private network) to network side (public network) direction, pass through the preposition SDN
Interchanger is responsible for flow load sharing to each Data Plane, if flow leads to some Data Plane by interchanger,
NAT module can generate the forward and reverse flow table of NAT on the Data Plane, at this time if backhaul traffic is also by the Data
Plane can then hit reversed flow table and thus allow for correctly NAT conversion.If backhaul traffic leads to other by interchanger
Data Plane will lead to NAT business since, there is no NAT flow table, message can not be correctly processed on other Data Plane
It is obstructed.
SDN switch mainstream technology is OpenFlow, it proposes the concept of flow table to traditional two-layer retransmitting table, three layers
Routing table is abstracted, so that decision of the data packet in repeating process is more flexible.But SDN flow table is advised at present
Mould is all little, generally 2k or so, this just seriously limits NAT resource flexible allocation on Data Plane.
Summary of the invention
The purpose of the present invention is overcoming the above-mentioned prior art, provide it is a kind of can be by NAT resource according to Data
Plane number is uniformly distributed, will not have an impact to NAT session flow table speed is established, stable and reliable working performance, being applicable in model
Enclose the system and method for the relatively broad NAT resource-adaptive distribution conversion that more Data Plane are realized based on NFV.
To achieve the goals above, of the invention to realize that the NAT resource-adaptive distribution of more Data Plane turns based on NFV
The system and method changed is as follows:
This realizes the system of the NAT resource-adaptive distribution conversion of more Data Plane based on NFV, is mainly characterized by,
The system includes:
EMS management module, to the port configuration of IP G and Data Plane corresponding relationship；
VBras virtual management module is connected by gateway interface with the EMS management module, and Data is used for
The reception and processing of flow load in Plane；
SDN switch module is connected, to forward with the vBras virtual management module by exchange interface
Flow load；
SDN controller module is connected by control interface with the EMS management module, and receive the port IPG and
The corresponding relationship of Data Plane, and be connected by switch port with the SDN controller module, to complete this
The configuration of SDN switch module.
This realizes the vBras virtual management of the system of the NAT resource-adaptive distribution conversion of more Data Plane based on NFV
Module further includes Message processing submodule, which passes through exchange interface and the SDN switch module
It is connected, the reception and processing for flow load in Data Plane.
This realizes the SDN controller module of the system of the NAT resource-adaptive distribution conversion of more Data Plane based on NFV
Including business flow list unit, and the configuration according to the business flow list unit to complete the SDN switch module.
This realizes the Message processing submodule of the system of the NAT resource-adaptive distribution conversion of more Data Plane based on NFV
Block further includes a NAT resource table unit and NAT flow table unit, and the NAT flow table unit and business flow list unit correspond.
A kind of system realization using the NAT resource-adaptive distribution conversion for realizing more Data Plane based on NFV is more
Data Plane NAT resource-adaptive distribution conversion method, be mainly characterized by, the method the following steps are included:
(1) Data Plane quantity, IP address and the correlation DPID information in vBras virtual management module are obtained；
(2) the NAT resource is uniformly issued to after the impartial cutting of NAT resource progress according to the Data Plane quantity
It is configured in each Data Plane and configures SDN switch；
(3) according to the NAT resource after the cutting, flow load is shared by the SDN switch to each Data
In Plane；
(4) each Data Plane receives corresponding backhaul traffic, carries out NAT conversion.
The more Data Plane of the realization NAT resource-adaptive distribution conversion method the step of (2) further comprise
It handles below:
When the variation of Data Plane quantity, NAT business module will discharge the NAT resource and to its cutting again.
In the step of method of the NAT resource-adaptive distribution conversion of the more Data Plane of the realization (2), this is evenly distributed
When process occurs over just Control Plane Plane Initialisation.
The flow load and backhaul traffic of the method for the NAT resource-adaptive distribution conversion of the more Data Plane of the realization are logical
The path crossed is identical.
The configuration of SDN switch of the method for the NAT resource-adaptive distribution conversion of the more Data Plane of the realization includes
It handles below:
IP address and correlation DPID information in multiple Data Plane are received by the SDN controller, and EMS is combined to manage
The corresponding relationship of the port IPG and Data Plane that reason system issues, generates final flow table.
Using the invention based on NFV realize more Data Plane the distribution conversion of NAT resource-adaptive system and
NAT resource can be uniformly distributed according to Data Plane number for method, while the assigning process is only in Control Plane
It is handled when Plane Initialisation, therefore when Data Plane handles flow, it will not be to establishing NAT session flow table speed
It has an impact, can also dynamically change the number of Data Plane using the system, and guarantee not there is a situation where flow interrupt,
The programming of this method is simple simultaneously, can be effectively added in actual software engineering project, ensure that empty machine business energy
The dynamic expansion of power has wider application range.
Detailed description of the invention
Fig. 1 is the stream of the system of the NAT resource-adaptive distribution conversion of the invention that more Data Plane are realized based on NFV
Measure repeating process schematic diagram.
Specific embodiment
It is further to carry out combined with specific embodiments below in order to more clearly describe technology contents of the invention
Description.
NAT (Network Address Translation, the network that more Data Plane are realized based on NFV of the invention
Address conversion) resource-adaptive distribution conversion system and method it is as follows:
This realizes the system of the NAT resource-adaptive distribution conversion of more Data Plane based on NFV, is mainly characterized by,
The system includes:
EMS management module, to the port configuration of IP G and Data Plane corresponding relationship；
VBras virtual management module is connected by gateway interface with the EMS management module, and Data is used for
The reception and processing of flow load in Plane；
SDN switch module is connected, to forward with the vBras virtual management module by exchange interface
Flow load；
SDN controller module is connected by control interface with the EMS management module, and receive the port IPG and
The corresponding relationship of Data Plane, and be connected by switch port with the SDN controller module, to complete this
The configuration of SDN switch module.
This realizes the vBras virtual management of the system of the NAT resource-adaptive distribution conversion of more Data Plane based on NFV
Module further includes Message processing submodule, which passes through exchange interface and the SDN switch module
It is connected, the reception and processing for flow load in Data Plane.
This realizes the SDN controller module of the system of the NAT resource-adaptive distribution conversion of more Data Plane based on NFV
Including business flow list unit, and the configuration according to the business flow list unit to complete the SDN switch module.
This realizes the Message processing submodule of the system of the NAT resource-adaptive distribution conversion of more Data Plane based on NFV
Block further includes a NAT resource table unit and NAT flow table unit, and the NAT flow table unit and business flow list unit correspond.
A kind of system realization using the NAT resource-adaptive distribution conversion for realizing more Data Plane based on NFV is more
Data Plane NAT resource-adaptive distribution conversion method, be mainly characterized by, the method the following steps are included:
(1) Data Plane quantity, IP address and the correlation DPID information in vBras virtual management module are obtained；
(2) the NAT resource is uniformly issued to after the impartial cutting of NAT resource progress according to the Data Plane quantity
It is configured in each Data Plane and configures SDN switch；
(3) according to the NAT resource after the cutting, flow load is shared by the SDN switch to each Data
In Plane；
(4) each Data Plane receives corresponding backhaul traffic, carries out NAT conversion.
The more Data Plane of the realization NAT resource-adaptive distribution conversion method the step of (2) further comprise
It handles below:
When the variation of Data Plane quantity, NAT business module will discharge the NAT resource and to its cutting again.
In the step of method of the NAT resource-adaptive distribution conversion of the more Data Plane of the realization (2), this is evenly distributed
When process occurs over just Control Plane Plane Initialisation.
The flow load and backhaul traffic of the method for the NAT resource-adaptive distribution conversion of the more Data Plane of the realization are logical
The path crossed is identical.
The configuration of SDN switch of the method for the NAT resource-adaptive distribution conversion of the more Data Plane of the realization includes
It handles below:
IP address and correlation DPID information in multiple Data Plane are received by the SDN controller, and EMS is combined to manage
The corresponding relationship of the port IPG and Data Plane that reason system issues, generates final flow table.
In a specific embodiment, referring to Fig. 1, it is the NAT of the invention for realizing more Data Plane based on NFV
The flow of the system and method for resource-adaptive distribution conversion forwards schematic diagram, in flow forwarding schematic diagram, there are two
Data Plane exists, and service port1 (CPG1, IPG1) is user side, and service port4 (CPG4, IPG4) is net
Network side.When customer flow enters from CPG1, SDN switch determines that message is sent to Data according to last of message source mac
Plane-1 or Data Plane-2, when network side flow enters from CPG4, SDN switch according to message destination IP most
Latter position determines that message is sent to Data Plane-1 or Data Plane-2.
NAT business module on CP can distribute one piece of dedicated NAT address resource for each Data Plane, such as in figure
The corresponding NAT resource of Data Plane-1 is IPPOOL1, to guarantee that backhaul traffic also walks Data Plane-1, the NAT module of CP
It needs that SDN controller, the flow that destination IP belongs to IPPOOL1 is notified to need to lead on Data Plane-1.
In another specific embodiment, the NAT resource-adaptive distribution conversion of more Data Plane should be realized based on NFV
Method in NAT business module processing the following steps are included:
(2.1) information of the Data Plane quantity and correlation DPID that are currently configured is obtained from vBras virtual management module；
(2.2) cutting is carried out to NAT resource based on Data Plane quantity, issues and be configured to each Data Plane, simultaneously
When the variation of Data Plane quantity, NAT business module can first discharge original resource, and carry out cutting again to NAT resource.
(2.3) based on the resource of cutting, SDN controller is notified to issue corresponding flow table, so that control backhaul traffic also passes through
Cross the same Data Plane.
This realizes the SDN controller packet in the method for the NAT resource-adaptive distribution conversion of more Data Plane based on NFV
It includes following processing: receiving the information (IP and DPID) that NAT module is sent in Control plane, manage system in combination with EMS
The corresponding relationship of IPG (inside) port and Data Plane that system issues generates final flow table, configures SDN switch (purpose
IP, IPG (inside) port).
This realizes the EMS network management interface in the method for the NAT resource-adaptive distribution conversion of more Data Plane based on NFV
Including following processing: having the configuration of the relationship of Data Plane and internal port in EMS system, management system holds IPG (inside)
Mouth relationship corresponding with Data Plane is handed down to SDN controller.
This realizes the Data Plane in the method for the NAT resource-adaptive distribution conversion of more Data Plane based on NFV
Message includes following processing:
(3.1) the NAT configuration rule that Control Plane is issued is received, NAT resource table is generated；
(3.2) during user is online, DPID information is uploaded to Control Plane by ipstack module；
(3.3) when customer flow passes through Data Plane, corresponding NAT flow table is generated.
Using the invention based on NFV realize more Data Plane the distribution conversion of NAT resource-adaptive system and
NAT resource can be uniformly distributed according to Data Plane number for method, while the assigning process is only in Control Plane
It is handled when Plane Initialisation, therefore when Data Plane handles flow, it will not be to establishing NAT session flow table speed
It has an impact, can also dynamically change the number of Data Plane using the system, and guarantee not there is a situation where flow interrupt,
The programming of this method is simple simultaneously, can be effectively added in actual software engineering project, ensure that empty machine business energy
The dynamic expansion of power has wider application range.
In this description, the present invention is described with reference to its specific embodiment.But it is clear that can still make
Various modifications and alterations are without departing from the spirit and scope of the invention.Therefore, the description and the appended drawings should be considered as illustrative
And not restrictive.
Claims (9)
1. a kind of system for the NAT resource-adaptive distribution conversion for realizing more Data Plane based on NFV, which is characterized in that institute
The system stated includes:
EMS management module, to the port configuration of IP G and Data Plane corresponding relationship；
VBras virtual management module is connected by gateway interface with the EMS management module, in Data Plane
The reception and processing of flow load；
SDN switch module is connected, to converting flow with the vBras virtual management module by exchange interface
Load；
SDN controller module is connected with the EMS management module by control interface, and receives the port IPG and Data
The corresponding relationship of Plane, and be connected by switch port with the SDN controller module, to complete SDN exchange
The configuration of machine module.
2. the NAT resource-adaptive distribution conversion according to claim 1 for realizing more Data Plane based on NFV is
System, which is characterized in that the vBras virtual management module further includes Message processing submodule, and the Message processing submodule is logical
It crosses exchange interface to be connected with the SDN switch module, the reception and processing for flow load in Data Plane.
3. the NAT resource-adaptive distribution conversion according to claim 1 for realizing more Data Plane based on NFV is
System, which is characterized in that the SDN controller module includes business flow list unit, and according to the business flow list unit to complete
At the configuration of the SDN switch module.
4. the NAT resource-adaptive distribution conversion according to claim 2 for realizing more Data Plane based on NFV is
System, which is characterized in that the Message processing submodule further includes a NAT resource table unit and NAT flow table unit, NAT stream
Table unit and business flow list unit correspond.
5. a kind of side for the NAT resource-adaptive distribution conversion for realizing more Data Plane using system described in claim 1
Method, which is characterized in that the method the following steps are included:
(1) Data Plane quantity, IP address and the correlation DPID information in vBras virtual management module are obtained；
(2) the NAT resource is uniformly issued to after the impartial cutting of NAT resource progress by configuration according to the Data Plane quantity
Into each Data Plane and configure SDN switch；
(3) according to the NAT resource after the cutting, flow load is shared by the SDN switch into each Data Plane；
(4) each Data Plane receives corresponding backhaul traffic, carries out NAT conversion.
6. the method for the NAT resource-adaptive distribution conversion according to claim 5 for realizing more Data Plane, feature
It is, the step (2) further comprises following processing:
When the variation of Data Plane quantity, NAT business module will discharge the NAT resource and to its cutting again.
7. the method for the NAT resource-adaptive distribution conversion according to claim 5 for realizing more Data Plane, feature
It is, in the step (2), when this evenly distributes process and occurs over just Control Plane Plane Initialisation.
8. the method for the NAT resource-adaptive distribution conversion according to claim 5 for realizing more Data Plane, feature
It is, the path that the flow load and backhaul traffic pass through is identical.
9. the method for the NAT resource-adaptive distribution conversion according to claim 5 for realizing more Data Plane, feature
It is, the configuration of the SDN switch includes following processing:
IP address and correlation DPID information in multiple Data Plane are received by the SDN controller, and combine EMS management system
The corresponding relationship of the port IPG and Data Plane that system issues, generates final flow table.
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| CN106105165A (en) * | 2014-03-25 | 2016-11-09 | 思科技术公司 | There is the dynamic service chain of network address translation detection |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8879392B2 (en) * | 2012-04-26 | 2014-11-04 | Hewlett-Packard Development Company, L.P. | BGP security update intercepts |
| CN102970388A (en) * | 2012-11-19 | 2013-03-13 | 北京奇虎科技有限公司 | Method and system for managing outer net access |
| CN106105165A (en) * | 2014-03-25 | 2016-11-09 | 思科技术公司 | There is the dynamic service chain of network address translation detection |
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